Has virtualenv installed correctly when `pip install virtualenv` outputs `using cached virtualenv`?

I did the same error, but succeeded with the following procedure.

$ brew install python3

$ pip3 install --upgrade virtualenv

Collecting virtualenv

Cache entry deserialization failed, entry ignored

Downloading virtualenv-15.2.0-py2.py3-none-any.whl (2.6MB)

100% |████████████████████████████████| 2.6MB 226kB/s

Installing collected packages: virtualenv

Successfully installed virtualenv-15.2.0

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